allen



No. e||,o2s-. Patented Sept. 20, I898.

c; H. ALLEN. LEATHER SPLITTING MACHINE.

(Application filed June 29, 1897.)

(No Model.)

2 Sheets--Sheet I.

Wfnesses ]nve 71/60 r.- Mm rm m K W is @DMMMM N0. BILUZG. Patented Sept.20, I898.

C. H. ALLEN.

' LEATHER SPLITTING MACHINE.

(Application filed June 29, 1897.)

(No Model.) 2 Sheets-Sheet 2.

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mc' Remus PETERS co, Puurtiumou WASHINGYON, n. c.

NITED STATES CHARLES H. ALLEN, OF WOBURN, MASSACHUSETTS, ASSIGNOR OFONE-HALF TO EUGENE E. WOOD, OF SAME PLACE.

LEATHER-'SPLITTING MACHINE.

SPEClFIGATION forming part of Letters Patent No. 61 1,026, datedSeptember 20, 1898. Applicatidn filed June 29, 1897. Serial No. 642,810.(No model.)

To all whom it may concern:

Be it known that I, CHARLES H. ALLEN, a citizen of the United States,residing at WVoburn, in the county of Middlesex and State oflVlassachusetts,have invented certain new and useful Improvements inLeather-Splittin g Machines, of which the following is aspecification,reference being had therein to the accompanying drawings.

My invention has reference more particularly to the means of supportingin proper position adjacent to the gage-roll the friction-rolls whichare employed to hold the gage-roll to its work and prevent deflectionthereof. Heretofore the said friction-rolls usually have been formedwith journals, and the latter have been received in boxes of ordinaryconstruction, the said boxes having been aflixed to the top beam. Theusual mode of supporting the friction-rolls has presented numerousdisadvantages. The contacting portions or linings of the boxes wear, andhence occasion frequently arises for relining of the said boxes. Ifthere is any-want of alinement on the part of the boxes pertaining to afriction-roller, the journals of the said roller bind in the said boxes.The boxes are not easy to adjust vertically, as frequently becomesnecessary in order to raise the ends of the friction rolls to differentheights,and difficulty arises when adjustment is effected, owing to thetendency which such adjustment has to throw the boxes out of properalinement and thereby occasion bind- 5 ing. \Vhen relining of the boxesis necessary, it can be effected only by removing the entire top beamand its accessories from the machine and sending them all to the shopwhere the work of relining is performed.

My invention has for its objects to remedy the foregoing disadvantages.

More particularly it is the aim of the invention to provide supports forthe frictionrolls which shall not be liable to excessive 5 wear, whichshall not be injuriously affected by wear, so as to interfere with theproper working of the friction-rolls, which shall be easy to adjust, soas to enable a friction-roll to be placed in whatever position may berequired, which shall not occasion binding, and

which shall be so constructed as to enable my invention is most closelyconnected. Fig.

3 is a detail view in elevation of the parts which are represented inFig. 2,0rnitting, however, the band-knife and its guide. Fig. 4 is aview mainly in section along a plane extending lengthwise of thefriction-roller,showing one of the centers for the said roll and thesupports therefor. Fig'. 5 is a view of the parts which are shown inFig. 4, representing them in elevation and as viewed from the lefthandside in Fig/l.

1 is the framework of the machine and is or may be of any suitable andpreferred construction.

2 is the driving-shaft, the same being suitably mounted in bearings onthe machineframework, and 3 is a band-pulley on the said shaft, itserving to receive the driving-band. 8o

4 is a bevel gear or pinion on the said shaft 2, it meshing with anddriving a bevel-gear 5 on the shaft 6, which latter is arrangedtransversely in suitable bearings on the frame work at one end of themachine and has applied thereto the pulley or wheel 7. A similar pulleyor wheel 8 is mounted in corresponding positions at the opposite end ofthe machine, and over the two pulleys or wheels 7 and 8' is passed theendless band-knife 9. 0 As usual in similar machines, the material whichis to be split passes on its way to the band-knife 9 between a pair ofrolls 10 and 11, (see Figs. 1 and 3,) the roll 11 being knowncustomarily as the gage-roll. 5

12 is a guide adjacent to the band knife and the rolls 10 and 11. (SeeFig. 2.) As customary, the said roll 10 is composed of a series ofseparate rings mounted loosely on a rod 13 and upheld vertically, so asto pre- 10o sent their upper surfaces in line against the underperiphery of the gage-roll 11 or against the under surface of thematerial being operated upon by the elastic covering 14 of thesupporting-roll 15. (See Figs. 2 and 3.)

16 16 are the friction -rolls, bearing upon the upper periphery of thegage-roll 11 and operating to hold the gage roll to its work and preventdeflection of the said roll from the desired position thereof. 17 is thetop beam, on which the supports for the said gage-roll 11 andfriction-rolls 16 16 are mounted. The opposite ends of each frictionroll16 are formed with tapering or conical recesses centrally disposedwithin the ends of the said roll and constituting bearings for thereception of the tapering centers 19. The said centers 19 are applied tosockets 20, which are formed in brackets 21, and the said brackets aresupported on the top beam 17. The shanks or stems of the said centers 19are screw-threaded to fit the screw-threaded interiors of the sockets20. This enables the centers to be moved or adjusted endwise. in thedirection of the length of the frictionroll, as will be found necessaryin adjusting the parts into their proper operative relations and indisengaging the centers from the friction-roll in providing for theremoval of the said roll.

22 is a lock or jam nut applied to the threaded stem or shank of eachcenter 19. The bracket 21 has a threaded stem or shank 23, passingthrough a vertical hole in a lug 24 on the top beam 17 and receiving onits exposed upper end the nut 25, the said nut resting on the uppersurface of the lug 24, and thereby serving to sustain support 21.

A 26 is a locking-screw which passes through a threaded hole in a lug 27on the top beam 17 and contacts by its end with the end of the stem orshank 23 of the supporting-bracket 21, so as to lock the said bracket inthe desired position of adjustment. For the purpose of lubricating thecontacting surfaces of the center 19 and the corresponding bear ing 18in the end of the friction-roll I form a longitudinal passage 28 in thecenter 19, this passage 28 being centrally disposed and having at itsinner end communication with a transverse passage 29, the latter openinginto an annular groove 30 extending around the stem or shank of thecenter 19.

Centrally of the stem or shank 23 of the supporting-bracket 21 I form anoil-passage 31, which is open at the upper end of the said stem orshank, while at its lower end the said passage 31 opens into the socket20 of the bracket 21. Oil poured into the upper end of the said passage31 passes into the annular groove 30, around the stem or shank of thecenter 19, and finds its way through the oil-passages 29 and 28 in thesaid center to the bearing 18.

As will be obvious, the centers 19 19 pertaining to each friction-rollare capable of being adjusted so as to shift the said friction-roll inthe direction of its length to any extent Which may prove desirable, andeach center is vertically adjustable, so that the friction-roll may begiven any required position. No binding of the centers within thebearings can take place Within the ordinary limits of the adjustment ofthe brackets 21 21 vertically. In order to insure against binding moreeffectually, I preferably form the bearings on a slightly-greater flarethan the taper of the centers, as indicated most clearly in Fig. 3 ofthe drawings. As will be obvious, the removal of either friction-rollfrom the machine may be accomplished simply by loosening the engagementof the centers therewith.

What I claim is- 1. The combination with the band-knife, and thegage-roll bearing against the upper surface of the material, of thefriction-roll in contact with the said gage-roll, the said friction-rollhaving the tapering bearings formed in its ends, the tapering centersentering the said bearings and serving for the support of thefriction-roll, the brackets in which the said centers are adjustable inthe direction of the length of the friction-roll, and means to effectindependent adjustment of the respective brackets vertically,substantially as described.

2. The combination with the band-knife, and the gage-roll bearingagainst the upper surface of the material, of the friction-roll incontact with the said gage-roll, the said friction-roll having thetapering bearings formed in its ends, the tapering centers entering thesaid bearings and each formed with the central oil-passage leading tothe said bearings, and also communicating with the exterior of the stemor shank of the respective center, and the supporting-brackets eachhaving the socket in which the corresponding center is fitted withcapacity for longitudinal adjustment, the said brackets each having anoilpassage delivering to that of the corresponding center, substantiallyas described.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES H. ALLEN.

\Vitnesses:

EUGENE E. W001), CHAS. F. RANDALL.

